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Thread: TIG cooler pump motor making noise

  1. #1
    Join Date
    Oct 2002
    Location
    Kirkland, Washington
    Posts
    2,128

    Default TIG cooler pump motor making noise

    I have a small carbonator. It has a molded plastic base, a stainless tank that holds 2-3 gallons, a 48 frame GE motor and a Procon rotary vane pump.

    It makes way too much noise when in service.

    The first diagnostic I did was to remove the pump from the motor. The noise stayed just the same.

    Next I uninstalled the motor and put it on a piece of rubber on the bench. It ran almost silently. Put it back on the base - noisy; removed it again - quiet.

    I cleaned the motor mount area. It wasn't very dirty, but I wanted to make sure some dirt wasn't twisting the motor base enough to make it buzz.

    I cut out a piece of 0.100 rubber gasket and put it on the base and put the motor on it. The noise is there but is diminished.

    I looked very closely at the base to see if it were cracked somewhere. No apparent mechanical damage.

    What else can I try? I can't have a TIG cooler that makes a lot of noise.

    metalmagpie

  2. #2
    Join Date
    Aug 2004
    Location
    Sunny So Cal
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    4,857

    Default

    I am not sure but I would call joint misalignment.

    It sounds like you covered everything. JR
    My old yahoo group. Bridgeport Mill Group

    https://groups.yahoo.com/neo/groups/...port_mill/info

  3. #3
    Join Date
    Oct 2002
    Location
    Kirkland, Washington
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    2,128

    Default

    Quote Originally Posted by JRouche View Post
    I am not sure but I would call joint misalignment.

    It sounds like you covered everything. JR
    The noise happens whether the pump is mounted or not. Can't be the motor/pump joint.

  4. #4
    Join Date
    Jun 2007
    Location
    Anderson SC
    Posts
    1,415

    Default

    Get some of the rubber standoffs with sleeves, just like they use for HVAC compressors. A junk refrigerator would be a good source. The rubber sheet helped but the mounting bolts are not isolated, proper standoffs would do that as well as working better than a rubber sheet.

  5. #5
    Join Date
    Jan 2014
    Location
    Long Island, N.Y.
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    2,648

    Default

    Quote Originally Posted by metalmagpie View Post
    ... The first diagnostic I did was to remove the pump from the motor. The noise stayed just the same.
    So it's the motor.
    Next I uninstalled the motor and put it on a piece of rubber on the bench. It ran almost silently.
    So it's not the motor.
    Put it back on the base - noisy;
    So it's the motor.
    removed it again - quiet.
    So it's not the motor.
    ... I cut out a piece of 0.100 rubber gasket and put it on the base and put the motor on it. The noise is there but is diminished. ...
    Maybe the motor has a slight vibration that's causing something else to resonate.

  6. #6
    Join Date
    Apr 2014
    Location
    Ventura,CA.
    Posts
    160

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    is the motor the open drip proof type with the rubber mounted frame? Does it have the removable plastic plugs on the end bushings/bearings? If so, it possibly needs lube. Jim

  7. #7
    Join Date
    Jan 2004
    Location
    Missouri
    Posts
    31,366

    Default

    So it is the motor, but the noise is being coupled to the air by the larger mounting surface. The motor by itself vibrates but does not couple to the air and make "noise".

    The motor probably has an issue, but your complaint is the noise itself and not whatever imbalance or problem is in the motor.

    So mount the motor on rubber bushings that do not let the motor touch the mounting bolts or mounting surface, and do not clamp the bolts down any tighter than needed.
    1601

    Keep eye on ball.
    Hashim Khan

  8. #8
    Join Date
    Dec 2009
    Location
    Stevens Point, WI
    Posts
    8,126

    Default

    Get some vehicle sound deadening and stick it to anything that makes noise?

    https://www.amazon.com/Kilmat-Deaden...59551979&psc=1
    Andy

  9. #9
    Join Date
    Sep 2008
    Location
    WI/IL border
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    2,258

    Default

    Ear plugs work wonders.

  10. #10
    Join Date
    May 2006
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    15,015

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    Quote Originally Posted by jmm03 View Post
    is the motor the open drip proof type with the rubber mounted frame? Does it have the removable plastic plugs on the end bushings/bearings? If so, it possibly needs lube. Jim
    I would seriously try this or at least check to see if the motor has developed some bearing play, all that's needed is a little play to start rattling things around, was this a slow development ? or did you fire it up one day and it was noisy?

    if the former then it might be bearing slop or just so dry it needs a little extra cushion of 90 wt

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